Coiling machine



June s, 1937.V

w. E. RISINGER l,

CILING MACHINE Filed Aug. 17, 1955 Q. .w .awk

INVENTOR.

ATTORNEY,

Patentedl June 8, 19.37"k

UNITED STATES PATENT OFFICE COILING MACHINE Willie E. Risnger,Minneapolis'Minn. Application August 17, 1935, Serial No. 36,715

4 Claims.

ments of various types of work.

Still another object is to produce such a machine in which coils of any,desired number of' convolutions may be formed directly through or withinperfcrations in one lor more sheets of l5 paper or the like, as in looseleaf books, tablets,

or the like, and which coils are automatically severed at the conclusionof their formation.

Other objects and advantages of the invention will appear in thefollowing description thereof,

Referring now tothe `accompanying drawing, forming part of thisapplication, and wherein like reference characters indicate like parts:

Figure 1 is an isometric perspective view of one of the completelyassembled coiling machines.

Figure 2 is a similar View of the control mechanism for the cutting ofthe coils from the stock after being formed, and which mechanism ismounted on the backside of the machine, as appears in Figure 1.

Figure 3is a perspective View of onefo-rm of mandrel about which thecoil is formed.

In theembodiment of the coiler here illustrated I have shown thesupporting mechanism as comprising a bed plate portion I, an uprightportion 2, and a horizontally extending beam 3, which is directly aboveand parallel with, though spaced from, the main portion ofthe bedplateI, and these parts may or may not be integrally formed as desired.Rotatively mounted upon the back side of the upright or standard portion2 of the support is the driving gear wheel 4, and back of which on thesame pivotal` support or 45 shaft, though free to operate independentlyof the wheel 4, is the cross arm 5, it being pivotally attached at itslower end as at 6 to the power supply reciprccable pitman ,'I, thelatters connection to any desired form of rotating power 50 means notbeing illustrated, Vas the lower end of the cross arm 5 isisimplydesigned to be 0perated back and forth in the lowermost arc of thewheel. At the upper end of the cross arm 5 is pivotally mounted as at 8the pawl 9 which 55 is held in normal engagement intermediate of any twoteeth of the gear 4 vby means of a suitable spring illustrated at IIJ,so that reciprocable action of the lower end of the cross arm 5 willintermittently rotate the gear 4 in anti-clockwise direction, as hereviewed.

The teeth of the gear 4 not only function in conjunction with the pawl 9and arm 5 through which it receives its power, but is in constant meshwith the small spur gear Il mounted upon a shaft I2 journalled withinthe beam 3. This shaft l2 also carries on the same side of the beam 3 asthe gear Il a somewhat larger gear I3 which is in constant mesh with alike gear I4 on the shaft I5 also but indirectly journalled in the beam3 and parallel with the shaft I2, so that the shafts I2 and I5 arerotated in unison. Upon that portion of the shafts I2 and I5 extendingforwardly of the beam 3 are mounted a pair of cooperative discs I6 andI1 respectively. These discs are grooved circumferentially, the depth ofthe groove being equal to slightly less than half` the diameter of thewire being operated upon and from which the coils are to be formed, andthe wire is designed to be fed intermediate of these discs as clearlyillustrated and forced downwardly by the rotation of the same; the discI6 being operated in clockwise direction and the one I1 inanti-clockwise direction, as their respective shafts are rotated withthe action of the gears I3 and I4, previously described.

The wire is illustrated at andis fed from anysuitable source through theguiding member 2l to and intermediate of the circumferen? tial faces ofthe discs, and from thence into the upstanding tubular guide 22 carriedupon the coiler head 23, the latter beinga suitable metal block eitherintegral or otherwise fixed to the upper face of Athe bed I, and isprovided with a bore `or core transverse same as well as the axes of theshafts I2 and I5 for the reception of, as here illustrated, the mandrel24. This mandrel is shown more in detail in Figure 3 of the drawing andhas a cutout channel or slot illustrated at 25 the full length thereoffor the reception of any work or object in which it is desired to formthe coils or rings and it is understood that the rearmost edge of thebore of the coiler head is in direct alignment with the hole throughwhich the wire 29 is fed into the head the full size of. the wire beingreceived into said bore and about a groove 25 here shownas formedadjacent one extreme end ofthe mandrel 24; this being the constructionof mandrel best adapted for forming the rings or coils in a single holeor slot as demanded by the work being operated upon. The mandrel 24 isfirmly held in position with the head by any suitable form of set screwas indicated at 21 and the slot 25 in said mandrel registers with a likeslot 28 in the head so that perforated work, for example a loose leaftablet or the like of any width, may be operated upon in forming therings directly within the perforations therein. It is apparent that whena forward stroke of the pitman 1 rotates the gear wheel d apredetermined distance, the discs I6 and I1 will by friction force thewire downwardly through the guide 22 and the hole in the head into andaround the lower portion of the groove 26 about the end of the mandrel24, and as the end of the wire comes upwardly into and passes the slot25 it will be guided axially of the mandrel outwardly and away from theface of the head block 23 the thickness of itself by proper spacing ofthe uppermost corner of the slot 25 as at 2S so that the coil willcontinue to be uniformlyshaped any desired number of convolutions; itbeing understood that the work for which the machine here illustrated isintended ordinarily requires a ring having three or more coils, only oneof which in any event remains in the block to be severed.

Now, appears the problem of severing the ring thus formed from the stockof which it is formed, and the same is accomplished automatically in thefollowing manner.

Within the back of the bed I is slidably mountl ed the bar 3Q, it havingpivotally attached to the innermost end thereof, as at 3|, the lingercatch 32, this latter being normally held 'upwardly against the pin 33by the spring 34 on the pin 35, as both of these pins 33 and 35 areattached to the back face of the bed I, just as the pin 36 is' alsofixed. Here it will be noted that a similarly shaped pin 31 is carriedon the end of the cross arm 5 and outwardly of the gear 4, thoughextended inwardly towards the bed I of the device, and as the pitman 'Iswings the lower end of the cross arm 5 to the opposite limit of itsstroke to that shown in Figure l of the drawing this pin 31 will engagethe arcuate lip 38 of the nger 32 and become engaged back of the notch39 formed therein so that when the lower end of the cross arm 5 idlyreturns for another stroke the nger 32 will be drawn with it apredetermined distance, the termination of which is governed by theposition of the pin 36 on the back wall of the bed I, it being apparentthat as the arcuate lip 38 of the nger engages said pin it will depressthe free end of the nger and dis- `the head 23 and beneath the mandrelbore.

This operation is accomplished by the rearmost end of the bar 42carrying a roller 43 depending therefrom, which roller is intermittentlyengaged by the cam 134 xed to the rearmost edge of the bar 30 sol thatwhen the bar 30 is pulled by the action of the pin 31 on the cross bar 5as previously described it will draw the knife bar rearwardly and asthis knife bar carries on its head 45 the knife 46 the cutting edge ofwhich slides over the lower lip of the slot 28 in the head when theoutermost corner of said knife will neatly sever the one remainingconvolution of wire in the mandrel and instantly return to its normalposition as shown by the action of any form of expansive spring 41. l

When this is accomplished it is evident that the tablet, calendar, orwhatever the work may be, will have, for example, the first of the ringsapplied thereto, when it may be slid to the other unoccupiedperforations through which a ring may be selectively formed.

In order that suitable frictional Contact with the wire may be had Ihave mounted the shaft I3 in the cross head til within a suitable slot49 in the extreme end of the beam 3 engaged by an expansive helicalspring 5i! adjustable by means of the set screw 5I so that this shaft I5is susceptible of slight movement and adjustment to cause the kproperimpingement of the wire by the discs I 6 and I1, and this without anyinjurious effects in respect to the meshing of the gears I3 and I 4.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is:

l. In a device for forming a wire ring within a hole through a pad ofpaper, a driving gear wheel, means for intermittently operating saiddriving wheel, a pair of gears driven by said driving gear, a pair ofgrooved discs operable by said gears, a mandrel having a grooved end toreceive a wire forced longitudinally by said discs about the groovedmandrel, and cutting means for severing the wire at the conclusion of apredetermined number of turns.

2. In a device for forming a wire ring within a hole through a pad ofpaper, a driving gear, a pair of grooved discs driven by said drivinggear, a mandrel having a grooved end and a longitudinal slot therein forreception of the pad of paper, said groove being for reception of a wireforced longitudinally by said discs about the grooved mandrel andthrough the hole in the pad of paper, and cutting means for severing thewire at the conclusion of a predetermined number of turns.

3. A mandrel for a mechanism for forming a wire ring consisting of aplurality of turns of wire, comprising a cylindrically shaped bodyportion having a channel in one side thereof its entire length, and agroove about the circumferential edge of one end thereof for guidingwire in a circular course and away from said mandrel.

4. In a device for forming wire rings, a head block, an adjustablecylindrical mandrel having a channel longitudinally disposed in one sidethereof, a channel within the adjacent end of said head block forregistration with the channel in the mandrel, a spirally shaped grooveabout the ring forming end of said mandrel, that portion of said grooveopposite said channel in the mandrel registering with a verticallydisposed hole accessible from the upper surface of said block, means forforcing ring forming Wire into and through said hole in the head block,around the end and away from said mandrel, and means for severing saidwire after a ring having a predetermined number of coils is formed.

WILLIE E. RISINGER.

